Re: 2.6.8-rc2-mm1 breaks PPPoE for me (was: 2.6.8-rc2-mm1)

Matthias Andree [off-list ref] wrote:

On Wed, 28 Jul 2004, Andrew Morton wrote:

quoted

ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.8-rc2/2.6.8-rc2-mm1/

...

quoted

gcc35-pppoe.c.patch
  gcc-3.5 fixes

Andrew,

I'm not sure if my problem is related to this patch, but in
2.6.8-rc2-mm1, PPPoE doesn't work for me, kernel compiled with gcc (GCC)
3.3.1 (SuSE Linux), a vanilla 2.6.7 is fine with the same compiler.

pppd[5685]: Plugin /usr/lib/pppd/2.4.1/pppoe.so loaded.
pppd[5685]: PPPoE Plugin Initialized
pppd[5685]: pppd 2.4.1 started by root, uid 0
pppd[5685]: Sending PADI
pppd[5685]: HOST_UNIQ successful match 
pppd[5685]: Failed to negotiate PPPoE connection: 25 Inappropriate ioctl for device
pppd[5685]: Exit.

A successful pppd session start, with 2.6.7, looks like this:

pppd[5070]: PPPoE Plugin Initialized
pppd[5070]: pppd 2.4.1 started by root, uid 0
pppd[5070]: Sending PADI
pppd[5070]: HOST_UNIQ successful match 
pppd[5070]: HOST_UNIQ successful match 
pppd[5070]: Got connection: 164b
pppd[5070]: Connecting PPPoE socket: 00:90:1a:XX:XX:XX 4b16 eth1 0x808a560
/sbin/hotplug[5166]: INTERFACE=ppp0
pppd[5070]: Using interface ppp0
pppd[5070]: Connect: ppp0 <--> eth1
pppd[5070]: Setting MTU to 1492.
pppd[5070]: Couldn't increase MRU to 1500
pppd[5070]: Setting MTU to 1492.
pppd[5070]: local  IP address 217.81.XXX.XXX
pppd[5070]: remote IP address 217.5.XXX.XXX
pppd[5070]: Script /etc/ppp/ip-up finished (pid 5180), status = 0x0

I'm a bit stumped by this - I'm not aware of any change which would have
caused the pppoe device to start returning -ENOTTY.

Is this still happening?  Are you sure the relevant modules are loaded? 
Could you capture an strace of pppd while it's happening?